wells



P. F. WELLS.

SPRING TOOTH.

(No Model.)

No. 882,847. Patented May 15. 1888.

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UNITED STATES PATENT OFFIC PHILIP F. WELLS, OF MILFORD, MICHIGAN, ASSIGNOR OF ONE-HALF TO B. s. WELLS, or SAME PLACE.

SPRlNG TOOTl-l.

SPECIFICATION forming part of Letters Patent No. 382,847, dated May 15, 1888.

Application filed September 22, 1887. Serial No. 250,431.

To all whom it may concern.-

Be it known that I, PHILIP F. WELLS, a citizen of the United States, residing at Milford, county of Oakland, State of Michigan, have invented a certain new and useful Improvement in Spring-Teeth; and Ideclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

end of the spring bar or arm.

My invention relates to certain new and usefulimprovementsinaspring-tooth forharrows, 850.; and it consists, essentially, of the construction and combination of devices, hereinafter specified, and more particularly set forth in the claim.

In the drawings, Figure 1 is a View in perspective embodying my invention. Fig. 2 is a separate view of the tooth. Fig. 3 is a crossser-tion of the spring with point attached thereto. Fig. 4 is a rear view.

I carry out my invention as follows, it havin g reference particularly to that class of teeth where a spring'arm is provided with an auxiliary point: Accordingly, A represents a spring-arm or body of a spring-tooth. This may be of 0rd 1 nary construction and perforated, preferably, by a longitudinal vertical slot to receive the bolt by which the pointis engaged therewith, the arm itself being made of a band of spring metal of suitable thickness.

B is a metallic point, preferably pointed at each end,.so as to be reversible upon thelower Midway of its extremities it is alsoperforated to receive the attaching-bolt 0, whereby it is firmly held upon the spring-arm, the bolt being provided with a nut, c. The slot in tlie spring-arm being a longitudinal one, as described, the point may be readily adjusted as desired, while it is (No model.)

also readily detachable from the arm whenever required.

My present invention, however, contemplates more particularly the construction ofthe point with flanges b b on its edges, the said edges being turned rearward from the face of the point, as shown, so as to engage over the edges of the springarm and have extended bearings along said edges. These flanges are constructed thus to fit over the edges of the spring-arm in such a manner as to effectually prevent the point from turning on said spring when only a single engaging-bolt O is employed. One bolt is thus amply sufficient, and the point is firmly held tight and immovable in place by means of the single bolt and the flanges of the point lapping or extending over the edges of the spring-arm. It is obviously impossible thus for the point to turn upon the bolt when the nut has been tightened thereon. It is evident,

also, that the flanging of the point thus serves to give added stiffness thereto, while it may also be readily reversed.

What I claim is-- The herein-described spring-tooth, consisting, essentially, of the curved-spring standard provided with a slot near its lower end, the reversible point having its edges turned abruptly rearwardly to snugly engage the opposite edges of the spring-standard and having an extended bearinglherewith in the direction of the length of the point, and the single drawbolt extending through the elongated slot to lock the point to the spring-standard, substantially as set forth.

In testimony whereof I sign this specification in the presence of two witnesses.

PHILIP F. WELLS.

Witnesses:

O. E. .RUTHERFORD, WALTER CRAWFORD. 

